as Graham Hainsworth

as Uncle Millard

as Basil Rathwood

as King Salazar (voice)

as Bernard Thatch

as British Reporter

as Horace Walpole

as Dr. McMerlin

as Dr. Menard

as Commander (voice)

as McReady

as Duke Stone

as Helford

as Cats' Producer

as Deane

as Mr. Waltham

as Dr. Whitcomb

as Dr. Tiberius Scott

as Harvey Wilks

as Judge In Heaven

as Dr. Campbell

as Cheshire

as Anton / Kreeger Paulovitch

as Dr. Henry Davenport, the Invisible Man (voice)

as Hal Conway

as Father Rosetti

as Count (voice)

as Reginald Harrington

as Hector Paradiso

as Sir David Tushingham

as Judge (voice)

as Smythe

as Fenwick

as "Center" Instructor

as Phillip Barbay

as Lord Malcolm Billings

as Captain Oliver

as Morgan

as William Troubshaw

as Patrick Burke

as Gordon Chumley